extreem9 Posted August 29, 2007 Report Share Posted August 29, 2007 So my buddy bought a 2000 bansh for a guy about a month ago, first time he took it out it blew. So he rebuilt it. Second time he took it out it blew up from what seems to be the orings on his his mod quad head. He swears he didnt pinch the oring, so he had the head and the jugs resurfaced. Put it together again and took it out this last weekend and it blew again diferent side but same blown out oring, and again he swears it wasnt pinched. He torgued it down to 22 pounds, He was breakin it in both times that it happened, what gives? Oh yeah the motor is a long rod with no base gasket spacer and the domes are milled for the clearence, it has a dune port and shearer pipes. Any ideas? :wallbash: Quote Link to comment Share on other sites More sharing options...
macgillivary Posted August 30, 2007 Report Share Posted August 30, 2007 Well could be alot of things you say blown like is there a hole in the piston??? its burning up orings for some reason so its probably getting hot for some reason check the jetting, airleaks, water pump, antifreeze leaks etc.... Also could be detonating, what size domes are in the head?? is he just running pump fuel, he may need race fuel something to start with maybe Quote Link to comment Share on other sites More sharing options...
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